FIELD: machine building.
SUBSTANCE: process rings on which sleeve fitting is mounted are installed on both sides of defective pipeline section. Process rings or composite bandage is installed on the side of edges of sleeve fitting. Sealing composition is pressed into cavities between process rings and bandage, thus creating additional seals. Hydraulic tightness tests of sleeve fitting are conducted; after that, space under sleeve fitting is filled with self-hardening mass under pressure compared to that in pipeline. For repair of extended sections there used is step installation of sleeve fittings; at that, common bandage is used for connection of neighbouring sleeve fittings.
EFFECT: improvement of repair quality due to possibility of creating self-hardening mass in space under sleeve fitting under the required pressure without sleeve-to-pipeline welding.
12 cl, 14 dwg
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